20051066 has 32 divisors (see below), whose sum is σ = 35676288. Its totient is φ = 8274240.

The previous prime is 20051063. The next prime is 20051071. The reversal of 20051066 is 66015002.

It is not an unprimeable number, because it can be changed into a prime (20051063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45041 + ... + 45483.

It is an arithmetic number, because the mean of its divisors is an integer number (1114884).

Almost surely, 2^20051066 is an apocalyptic number.

20051066 is a deficient number, since it is larger than the sum of its proper divisors (15625222).

20051066 is a wasteful number, since it uses less digits than its factorization.

20051066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 20051066 is about 4477.8416675894. The cubic root of 20051066 is about 271.6725893967.

Adding to 20051066 its reverse (66015002), we get a palindrome (86066068).

The spelling of 20051066 in words is "twenty million, fifty-one thousand, sixty-six".